A kind of pen heat transfer film production with compression strength detection device

Abstract

The present application relates to the technical field of pen thermal transfer film compression strength detection, and particularly relates to a pen thermal transfer film production compression strength detection device, which comprises a mounting box, a mounting frame, a multi-stage hydraulic cylinder, a connecting plate and a pressure sensor one, etc., the mounting box is connected with the mounting frame, the mounting frame is installed with the multi-stage hydraulic cylinder, the telescopic rod lower end of the multi-stage hydraulic cylinder is connected with the connecting plate, and the connecting plate bottom is installed with the pressure sensor one. The pen thermal transfer film can be pressed by the pressing plate, the pen thermal transfer film compression strength is detected, the pen thermal transfer film can be supported by the supporting plate, the pen thermal transfer film does not need to be manually supported by the staff, the detection efficiency can be improved, the pen thermal transfer film can be more flat, the problems of uneven tension distribution and inconsistent pre-stretching degree of the pen thermal transfer film can be avoided, and the detection result accuracy can be improved.

Description

Technical Field

[0001] This invention relates to the field of compressive strength testing technology for thermal transfer film used in pens, and more particularly to a compressive strength testing device for the production of thermal transfer film used in pens. Background Technology

[0002] In the production process of heat transfer film for pens, compressive strength testing is one of the core steps. By testing compressive strength, we can assess whether the heat transfer film can remain intact under certain pressure, thus avoiding quality problems caused by damage.

[0003] The current testing method uses a double-clamp tensile testing device. By fixing the two ends of the pen heat transfer film to two clamps respectively, a driving mechanism is used to apply tension, while a pressure plate applies uniform pressure to the pen heat transfer film to simulate the composite stress state under actual working conditions. Finally, the deformation and rupture threshold data of the film are collected by sensors to calculate the compressive strength parameters.

[0004] The thermal transfer film for pens is characterized by high flexibility, low thickness (typically in the micrometer range), and a smooth surface. Current fixture designs feature an open frame structure with a large gap between the two fixtures to accommodate the vertical movement of the pressure plate. During the initial clamping stage, the lack of effective support for the thermal transfer film makes it prone to local slippage. This requires manual leveling and positioning of the film by operators to ensure it is precisely embedded into the clamping surface without external interference. This process significantly reduces testing efficiency. Furthermore, manual operation makes it difficult to keep the thermal transfer film flat, leading to uneven tension distribution and inconsistent pre-stretching, which directly affects the accuracy of the test results. Summary of the Invention

[0005] In view of this, the present invention provides a compressive strength testing device for the production of thermal transfer film for pens, which can overcome the shortcomings of requiring workers to manually flatten and position the thermal transfer film for pens so that it can be accurately embedded into the clamping surface of the fixture without external force interference. This process greatly reduces the testing efficiency, and manual operation makes it difficult to keep the thermal transfer film flat, resulting in uneven tension distribution and inconsistent pre-stretching of the thermal transfer film, which directly affects the accuracy of the test results.

[0006] The technical solution is: a compressive strength testing device for pen heat transfer film production, comprising a mounting box, a mounting frame, a multi-stage hydraulic cylinder, a connecting plate, a pressure sensor, a sliding rod, a pressure plate, a rotating plate, a torsion spring, a vision camera, a rotating block, a push block, a controller, a straightening mechanism, and a supporting mechanism. The mounting box is connected to the mounting frame, and the multi-stage hydraulic cylinder is mounted on the mounting frame. The lower end of the telescopic rod of the multi-stage hydraulic cylinder is connected to the connecting plate. The pressure sensor is mounted on the bottom of the connecting plate. Two sliding rods are slidably connected to the connecting plate, and the lower ends of the two sliding rods are connected together... A pressure plate is attached to the mounting bracket to press the heat transfer film for testing its compressive strength. A rotating plate is hinged to the mounting bracket, and a torsion spring connects the rotating plate and the mounting bracket. A vision camera is mounted on the bottom of the rotating plate, and a rotating block is connected to the top of the rotating plate. A push block is connected to the connecting plate, and the push block contacts the rotating block. A controller is mounted on the mounting box. A multi-stage hydraulic cylinder, a pressure sensor, and a vision camera are all electrically connected to the controller. A straightening mechanism is used to straighten the heat transfer film for the pen, and a supporting mechanism is used to support the heat transfer film for the pen.

[0007] Furthermore, the straightening mechanism includes a mounting plate, a slide rail, a slider, a spring, a placement plate, a bidirectional lead screw, a stepper motor, a moving block, a pulling block, a second pressure sensor, and a clamping assembly. Mounting plates are connected to the left and right sides of the top of the mounting box. Slide rails are connected to the front and rear sides between the two mounting plates. Sliding blocks are slidably connected to the left and right sides inside the slide rails. Springs connect the sliders to the mounting plates. A placement plate for holding the pen heat transfer film is connected between two opposing sliders. A bidirectional lead screw is connected to the front and rear sides between the two mounting plates. Two stepper motors are mounted on the right mounting plate. The output shafts of the stepper motors are connected to the bidirectional lead screw. Moving blocks are threaded to the left and right sides of the bidirectional lead screw. The moving blocks slide through the sliders. Pulling blocks are connected to the moving blocks, and a second pressure sensor is mounted on each pulling block. The stepper motors and the second pressure sensor are electrically connected to the controller. The clamping assembly is used to clamp the pen heat transfer film on the placement plate. The pulling block is used to pull the slider, causing the two placement plates to move away from each other, thus straightening the pen heat transfer film.

[0008] Furthermore, the clamping assembly includes a clamping plate, a second torsion spring, a contact block, and a push plate. The clamping plate is hinged to the placement plate, and the second torsion spring connects the clamping plate and the placement plate. The front and rear sides of the bottom of the clamping plate are connected to contact blocks, and the moving block is connected to a push plate. The push plate is used to push the contact block, causing the contact block to rotate. The contact block drives the clamping plate to rotate downward, and the clamping plate clamps the pen on the placement plate with the heat transfer film.

[0009] Furthermore, the supporting mechanism includes a support plate and a contact plate. Support plates are hinged to each other on the placement plate, and the two support plates are in contact with each other. Contact plates are connected to both the front and rear sides of the support plate. The push plate can support the contact plate so that the support plate can support the heat transfer film for the pen.

[0010] Furthermore, it also includes guide rods, with guide rods connected to the sliders. The guide rods slide through the mounting plate, and springs are sleeved on the guide rods.

[0011] Furthermore, it also includes pads, with pads symmetrically connected to the left and right sides of the bottom of the mounting box.

[0012] Furthermore, the two push plates on the same bidirectional lead screw are inclined downwards on the side that is close to each other.

[0013] Furthermore, the sides of the two support plates that are close to each other are both curved surfaces.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This invention uses a pressure plate to press the heat transfer film for pens to test its compressive strength. A support plate supports the heat transfer film, eliminating the need for manual leveling and improving testing efficiency. It also ensures a smoother surface, preventing uneven tension distribution and inconsistent pre-stretching, thus enhancing the accuracy of the test results.

[0016] 2. The controller can control the extension rod of the multi-stage hydraulic cylinder to pause for a period of time before shortening, so that the pressure plate can keep pressing on the heat transfer film for the pen, simulating the static or dynamic load conditions that may be encountered in actual use and transportation, and ensuring the accuracy of the test results. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0018] Figure 2 A three-dimensional structural schematic diagram of the slide bar, pressure plate, rotating plate, and vision camera of the present invention is shown.

[0019] Figure 3 A three-dimensional structural schematic diagram of the pressure sensor, torsion spring, rotating block, and push block of the present invention is shown.

[0020] Figure 4 A three-dimensional structural schematic diagram of the straightening mechanism and the supporting mechanism of the present invention is shown.

[0021] Figure 5 A three-dimensional structural schematic diagram of the straightening mechanism of the present invention is shown.

[0022] Figure 6 A three-dimensional structural schematic diagram of the slider, spring, moving block, pulling block, pressure sensor II, and push plate of the present invention is shown.

[0023] Figure 7 A three-dimensional structural schematic diagram of the clamping plate, torsion spring II, and contact block of the present invention is shown.

[0024] Figure 8 A three-dimensional structural schematic diagram of the contact block and push plate of the present invention is shown.

[0025] Figure 9 A three-dimensional structural schematic diagram of the support mechanism of the present invention is shown.

[0026] Reference numerals: 1. Mounting box, 2. Mounting bracket, 3. Multi-stage hydraulic cylinder, 4. Connecting plate, 5. Pressure sensor one, 6. Slide rod, 7. Pressure plate, 8. Rotating plate, 9. Torsion spring one, 10. Vision camera, 11. Rotating block, 12. Push block, 13. Controller, 141. Mounting plate, 142. Slide rail, 143. Slider, 144. Spring, 145. Placement plate, 146. Bidirectional lead screw, 147. Stepper motor, 148. Moving block, 149. Pulling block, 1410. Pressure sensor two, 1411. Clamping plate, 1412. Torsion spring two, 1413. Contact block, 1414. Push plate, 151. Support plate, 152. Contact plate, 16. Guide rod, 17. Pad block. Detailed Implementation

[0027] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The technical solutions of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. It should be understood that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Reference Figures 1-9A compressive strength testing device for pen heat transfer film production includes a mounting box 1, a mounting frame 2, a multi-stage hydraulic cylinder 3, a connecting plate 4, a pressure sensor 5, a slide rod 6, a pressure plate 7, a rotating plate 8, a torsion spring 9, a vision camera 10, a rotating block 11, a push block 12, a controller 13, a straightening mechanism, and a supporting mechanism. The mounting frame 2 is bolted to the upper rear side of the mounting box 1. The multi-stage hydraulic cylinder 3 is bolted to the upper front side of the mounting frame 2. The lower end of the telescopic rod of the multi-stage hydraulic cylinder 3 is bolted to the connecting plate 4. The pressure sensor 5 is bolted to the bottom center of the connecting plate 4. The front and rear of the connecting plate 4 are slidably connected. There is a sliding rod 6, and the lower ends of the two sliding rods 6 are connected to a pressure plate 7. A rotating plate 8 is hinged in the middle of the mounting frame 2. Two torsion springs 9 are connected between the rotating plate 8 and the mounting frame 2. A vision camera 10 is bolted to the front bottom of the rotating plate 8. A rotating block 11 is connected to the rear top of the rotating plate 8. A push block 12 is connected to the rear side of the connecting plate 4. The rear side of the push block 12 contacts the front side of the rotating block 11. A controller 13 is bolted to the middle front side of the mounting box 1. The multi-stage hydraulic cylinder 3, pressure sensor 5 and vision camera 10 are all electrically connected to the controller 13. The straightening mechanism is used to straighten the heat transfer film for the pen. The supporting mechanism is used to support the heat transfer film for the pen.

[0030] Reference Figures 4-8The straightening mechanism includes a mounting plate 141, a slide rail 142, a slider 143, a spring 144, a placement plate 145, a bidirectional lead screw 146, a stepper motor 147, a moving block 148, a pulling block 149, a pressure sensor 1410, and a clamping assembly. Mounting plates 141 are bolted to the top left and right sides of the mounting box 1. Slide rails 142 are bolted to the front and rear sides of the two mounting plates 141. Sliders 143 are slidably connected to the left and right sides inside the slide rails 142. Springs 144 connect the sliders 143 and the mounting plates 141. Placement plates 145 are bolted between two opposing sliders 143. A bidirectional lead screw 146 is threaded to the front and rear sides of the two mounting plates 141. The bidirectional lead screw 146 is located inside the slide rails 142. The right side of the mounting plate 141 is bolted to the front and rear sides. There is a stepper motor 147. The output shaft of the stepper motor 147 is connected to the right end of the bidirectional lead screw 146 via a coupling. The left and right sides of the bidirectional lead screw 146 are threadedly connected to moving blocks 148. The moving blocks 148 slide through the slider 143. The threads on the two moving blocks 148 on the same bidirectional lead screw 146 are in opposite directions, so the bidirectional lead screw 146 can drive the two moving blocks 148 to move in opposite directions. Each moving block 148 is connected to a pull block 149. Each pull block 149 is bolted with a pressure sensor 1410. The stepper motor 147 and the pressure sensor 1410 are electrically connected to the controller 13. The clamping assembly is used to clamp the pen heat transfer film on the placement plate 145. The pull block 149 is used to pull the slider 143, so that the two placement plates 145 move away from each other and straighten the pen heat transfer film.

[0031] Reference Figures 4-8 The clamping assembly includes a clamping plate 1411, a second torsion spring 1412, a contact block 1413, and a push plate 1414. The clamping plate 1411 is hinged to the side of the two placement plates 145 that are far apart from each other. The top of the placement plates 145 has a rubber layer, and the side of the two clamping plates 1411 that are close to each other also has a rubber layer. The rubber layer has a high coefficient of friction, which can improve the friction between the placement plates 145, the clamping plate 1411, and the heat transfer film for the pen, and ensure the stability of the heat transfer film for the pen. Two second torsion springs 1412 are connected between the clamping plate 1411 and the placement plate 145. The contact blocks 1413 are connected to the front and rear sides of the bottom of the clamping plate 1411, and the push plate 1414 is connected to the side of the front and rear moving blocks 148 that are close to each other.

[0032] Reference Figure 4 and Figure 9The supporting mechanism includes a support plate 151 and a contact plate 152. The support plate 151 is hinged to the side of the two placement plates 145 that are close to each other. The two support plates 151 are in contact with each other, and the side of the two support plates 151 that are close to each other is an arc surface to ensure that the two support plates 151 can rotate downward normally. The front and rear sides of the support plate 151 are connected to the contact plate 152. The top of the push plate 1414 is in contact with the bottom of the contact plate 152. The side of the two push plates 1414 on the same bidirectional lead screw 146 that are close to each other is inclined downward, so that the push plate 1414 can better push the contact plate 152.

[0033] Initially, pusher block 12 pushes rotating block 11, and torsion spring 9 is in a deformed state. The operator places the pen heat transfer film on two placement plates 145. Pusher plate 1414 supports contact plate 152, keeping it horizontal, thus keeping support plate 151 horizontal. This allows support plate 151 to support the pen heat transfer film, preventing it from sagging. This eliminates the need for manual leveling of the film, improving testing efficiency and ensuring a smoother surface. It also prevents uneven tension distribution and inconsistent pre-stretching, improving the accuracy of test results. Subsequently, stepper motor 147 is started. The output shaft of stepper motor 147 drives bidirectional lead screw 146 to rotate. The lead screw 146 drives the moving block 148 to move, which in turn drives the pull block 149 and the push plate 1414 to move. The push plate 1414 pushes the contact block 1413, causing it to rotate. The contact block 1413 then drives the clamping plate 1411 to rotate downwards. The clamping plate 1411 can hold the pen on the placement plate 145 with the heat transfer film. The torsion spring 1412 deforms, and then the push plate 1414 disengages from the contact plate 152. The support plate 151 rotates downwards under its own weight. Then, the pull block 149 pulls the slider 143, causing it to move. The spring 144 is compressed, and the slider 143 drives the two placement plates 145 to move away from each other, straightening the pen with the heat transfer film. The pressure is transmitted... Pressure sensor 1410 and slider 143 are in direct contact. Pressure sensor 1410 senses the pressure value. When the pressure value sensed by pressure sensor 1410 reaches the preset value in controller 13, controller 13 controls stepper motor 147 to shut down, and then controls the extension rod of multi-stage hydraulic cylinder 3 to extend, driving connecting plate 4, pressure sensor 15, and push block 12 to move downward. Pressure plate 7 moves downward accordingly, and push block 12 disengages from rotating block 11. Under the action of torsion spring 19, rotating plate 8 and vision camera 10 rotate backward to avoid collision between pressure plate 7 and rotating plate 8. Subsequently, pressure plate 7 contacts the heat transfer film for pen, slider 6 and pressure plate 7 stop moving, pressure sensor 15 continues to move downward, and pressure sensor 15 contacts the heat transfer film for pen. The pressure plate 7 contacts and presses down on the heat transfer film for the pen, thus testing the compressive strength of the heat transfer film. The pressure sensor 5 senses the pressure value. When the pressure value sensed by the pressure sensor 5 reaches the preset value in the controller 13, the controller 13 controls the extension rod of the multi-stage hydraulic cylinder 3 to pause for a period of time before retracting. During this period, the pressure plate 7 continuously presses down on the heat transfer film for the pen, simulating static or dynamic load conditions that may be encountered during actual use and transportation, ensuring the accuracy of the test results. After a period of time, the extension rod of the multi-stage hydraulic cylinder 3 retracts and resets, driving the connecting plate 4, pressure sensor 5, and push block 12 to move upward and reset. Push block 12 will contact the rotating block 11 and push the rotating block 11 to rotate upward.The rotating block 11 drives the rotating plate 8 and the vision camera 10 to rotate forward, positioning the vision camera 10 directly above the pen-use heat transfer film. The vision camera 10 can then capture images of the heat transfer film for visual inspection, determining its compressive strength based on its appearance. After inspection, the stepper motor 147 is activated. The output shaft of the stepper motor 147 drives the bidirectional lead screw 146 to rotate in the opposite direction. The bidirectional lead screw 146 drives the moving block 148 to move, which in turn drives the pull block 149 and the push plate 1414 to move... When the pull block 149 stops pulling the slider 143, the slider 143 will return to its original position under the action of the spring 144. The slider 143 will drive the two placement plates 145 to move closer to each other. The push plate 1414 and the contact block 1413 will disengage. Under the action of the second torsion spring 1412, the clamping plate 1411 will rotate upward. Then, the inclined part of the push plate 1414 will contact the contact plate 152 and push the contact plate 152 to rotate upward. The contact plate 152 will drive the support plate 151 to rotate upward, rotating the support plate 151 to a horizontal position.

[0034] Reference Figure 6 It also includes a guide rod 16. The two sliders 143 in the same slide rail 142 are connected to the guide rod 16 on the side away from each other. The guide rod 16 slides through the mounting plate 141. The spring 144 is sleeved on the guide rod 16, which can prevent the spring 144 from bending. At the same time, the guide rod 16 can guide the slider 143, making the slider 143 move more smoothly.

[0035] Reference Figure 1 It also includes pads 17. The bottom left and right sides of the mounting box 1 are symmetrically connected with pads 17 by bolts. The pads 17 can provide stable support and ensure that the mounting box 1 can be placed stably on the ground.

[0036] Obviously, the embodiments described above are only some embodiments of the present invention, and not all embodiments. They only express the preferred implementation of the present invention and are described in a relatively specific and detailed manner, but should not be construed as limiting the scope of the present invention.

[0037] It should be noted that, for those skilled in the art, various modifications, additions or subtractions, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A compressive strength testing device for producing thermal transfer film for pens, comprising a mounting box (1) and a mounting frame (2), wherein the mounting box (1) is connected to the mounting frame (2), characterized in that, It also includes a multi-stage hydraulic cylinder (3), a connecting plate (4), a pressure sensor (5), a slide rod (6), a pressure plate (7), a rotating plate (8), a torsion spring (9), a vision camera (10), a rotating block (11), a push block (12), a controller (13), a straightening mechanism, and a supporting mechanism. The multi-stage hydraulic cylinder (3) is mounted on the mounting bracket (2). The lower end of the telescopic rod of the multi-stage hydraulic cylinder (3) is connected to the connecting plate (4). The pressure sensor (5) is mounted on the bottom of the connecting plate (4). Two slide rods (6) are slidably connected on the connecting plate (4). The lower ends of the two slide rods (6) are connected to the pressure plate (7). The pressure plate (7) is used to press the heat transfer film for the pen. The pen heat transfer film is tested for compressive strength. A rotating plate (8) is hinged on the mounting frame (2). A torsion spring (9) is connected between the rotating plate (8) and the mounting frame (2). A vision camera (10) is installed at the bottom of the rotating plate (8). A rotating block (11) is connected to the top of the rotating plate (8). A push block (12) is connected to the connecting plate (4). The push block (12) and the rotating block (11) are in contact. A controller (13) is installed on the mounting box (1). The multi-stage hydraulic cylinder (3), pressure sensor (5) and vision camera (10) are all electrically connected to the controller (13). The straightening mechanism is used to straighten the pen heat transfer film. The supporting mechanism is used to support the pen heat transfer film. The straightening mechanism includes a mounting plate (141), a slide rail (142), a slider (143), a spring (144), a placement plate (145), a two-way lead screw (146), a stepper motor (147), a moving block (148), and a pulling block (149). The mounting box (1) is connected to the top left and right sides of the top with mounting plates (1). The two mounting plates (141) are connected to the front and back sides of the front and rear sides with slide rails (142). The sliders (143) are slidably connected to the left and right sides inside the slide rails (142). The sliders (143) are connected to the mounting plates (141) with springs (144). A placement plate (145) for placing a heat transfer film for a pen is connected between two opposing sliders (143). Two bidirectional lead screws (146) are connected to the front and rear sides of the two mounting plates (141). Two stepper motors (147) are mounted on the right mounting plate (141). The output shaft of the stepper motor (147) is connected to the bidirectional lead screw (146). The left and right sides of the bidirectional lead screw (146) are connected to moving blocks (148) by threads. The moving blocks (148) slide through the slider (143). Pull blocks (149) are connected to the moving blocks (148). The clamping assembly includes a clamping plate (1411), a second torsion spring (1412), a contact block (1413), and a push plate (1414). The clamping plate (1411) is hinged to the placement plate (145). The second torsion spring (1412) is connected between the clamping plate (1411) and the placement plate (145). The contact blocks (1413) are connected to the front and rear sides of the bottom of the clamping plate (1411). The push plate (1414) is connected to the moving block (148). The push plate (1414) is used to push the clamping plate (1411) to rotate downward. The support mechanism includes a support plate (151) and a contact plate (152). The support plate (151) is hinged to the placement plate (145). The two support plates (151) are in contact with each other. The front and rear sides of the support plate (151) are connected to the contact plate (152). The push plate (1414) can support the contact plate (152) so that the support plate (151) can support the heat transfer film for the pen.

2. The compressive strength testing device for pen heat transfer film production according to claim 1, characterized in that, The straightening mechanism also includes a pressure sensor (1410) and a clamping assembly. The pressure sensor (1410) is installed on each of the pull blocks (149). The stepper motor (147) and the pressure sensor (1410) are electrically connected to the controller (13). The clamping assembly is used to clamp the pen heat transfer film on the placement plate (145). The pull block (149) is used to pull the slider (143) to move the two placement plates (145) away from each other and straighten the pen heat transfer film.

3. The compressive strength testing device for pen heat transfer film production according to claim 2, characterized in that, The push plate (1414) is used to push the contact block (1413) to rotate the contact block (1413). The contact block (1413) drives the clamping plate (1411) to rotate downward. The clamping plate (1411) clamps the pen on the placement plate (145) with the heat transfer film.

4. The compressive strength testing device for pen heat transfer film production according to claim 1, characterized in that, It also includes a guide rod (16), and the slider (143) is connected to the guide rod (16). The guide rod (16) slides through the mounting plate (141), and the spring (144) is sleeved on the guide rod (16).

5. The compressive strength testing device for pen heat transfer film production according to claim 1, characterized in that, It also includes pads (17), and pads (17) are symmetrically connected to the bottom left and right sides of the mounting box (1).

6. The compressive strength testing device for pen heat transfer film production according to claim 1, characterized in that, The two push plates (1414) on the same double-acting screw (146) are inclined downward on the side that is close to each other.

7. The compressive strength testing device for pen heat transfer film production according to claim 1, characterized in that, Both support plates (151) have rounded surfaces on the side that is close to each other.

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